Samsung C480W strange shadows when printing

[maaii]

Has someone encounter this issue before ? (and knows the solution ?)

I cleaned the printer and replaced (with parts from a similar printer):

- fuser

- transfer roller
- transfer belt
- drum

- laser unit

- safety door of the laser unit.

Without having other option left I then force-stoped the printer so the drum and the belt will keep the toner and then I saw that the characters on the belt as well on the drum having that "shadow".

For the paper I changed the settings to the lowest quality paper I could find in the menu. The paper I have now is HP everyday paper (CHP650). It seems to be compatible with laser printers.

At some point the shadows in the center of the page disappeared, but now they are back.

I couldn't replace the cartridges as the other printer has slightly different cartridges. Could be the black cartridge ? It has no visible damage or any signs of imperfections on the magnetic roller, and it almost new, now less than 70 pages (and it is an original Samsung cartridge).

[Printer_S]

Hello, Are you using Samsung original brand new cartridges?

In case that you are, I would sugest you to take out the toners, clean the contacts up with a dry cloth.

Make a Hard reset (unplugg the power cord from the back of your printer while it is ON, press and hold the power/wakeup button during 15 seconds), when you release the button, plug it back in and turn it ON.

If previous steps does not work you can clear the memory:

Press the sequence on the printer panel Menu > Back > Left > Right > OK > Stop and you will enable the "Tech mode", press ok on "tech mode", then select "Data setup" and "Clear all Mem"

Note: The menu button is above the Ok button

I attach a video to access to the tech mode in your printer:

https://www.youtube.com/watch?v=0ErCyT0SA9w

I hope this steps help you out

Best regards.

[Roberto40]

So... On my printer I have different issue. Reseting with unplug dasnt work, hidden tech menu as well. Printer starts and heating up and when its ready its disconnect from network, cable usb and start the cycle again. When its idle afer disconnect I cant see it on the screen but hen cycle starts warming it visible but I cant print anything. Copy is also not working.